ConcurrentSkipListMap equals() method in Java with Examples

Last Updated : 14 Feb, 2019

The equals() method of java.util.concurrent.ConcurrentSkipListMap is an in-built function in Java which to check the equality of this Map object with the specified object. The method returns true if the given object is also a map of the previous one and the two maps have the same mappings. Syntax:

public boolean equals(Object ob)

Parameter: The function accepts a single mandatory parameter ob which specifies object to be compared for equality with this map. Return Value: The function returns true if the specified object is equal to this map. Below programs illustrate the above method: Program 1:

Java

// Java Program Demonstrate equals()
// method of ConcurrentSkipListMap

import java.util.concurrent.*;

class GFG {
    public static void main(String[] args)
    {

        // Initializing the map
        ConcurrentSkipListMap<Integer, Integer>
            mpp = new ConcurrentSkipListMap<Integer,
                                            Integer>();

        // adding elements in map
        for (int i = 1; i <= 5; i++)
            mpp.put(i, i);

        // equals operation on map
        System.out.println(mpp.equals(4));
    }
}

Output:

false

Program 2:

Java

// Java Program Demonstrate equals()
// method of ConcurrentSkipListMap

import java.util.concurrent.*;

class GFG {
    public static void main(String[] args)
    {

        // Initializing the map
        ConcurrentSkipListMap<Integer, Integer>
            mpp = new ConcurrentSkipListMap<Integer,
                                            Integer>();

        // adding elements in map
        for (int i = 1; i <= 5; i++)
            mpp.put(i, i);

        // equals operation on map
        System.out.println(mpp.equals(3));
    }
}

Output:

false

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentSkipListMap.html#equals-java.lang.Object-

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